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Suggest a test chemical that can be added to waste water to precipitate lead II ions show a chemical equation for the formation of the precipitate?
Wiki User
∙ 8y ago
Put a little hydrochloric acid in the water sample.
2HCl + Pb -> H2 + PbCl2.
Lead chloride is insoluble and its density is much higher than that of water. You can then perform a test on the precipitate to determine the ratio of lead chloride to silver chloride in your precipitate.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoA suitable test chemical could be sodium chloride. Sodium chloride (NaCl) is easily water soluble, which means the ions will dissociate from each other. The lead(II) ions will then react with the chloride ions to produce the insoluble salt lead(II) chloride (PbCl2). Because it's insoluble, you'll get a precipitate. The net ionic equation for this procedure is: Pb(+2)(aq) + 2Cl(-)(aq) --> PbCl2(s).
Wiki User
∙ 14y agoOne answer is hydrogen sulfide.
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